1//===- VE.cpp -------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "ABIInfoImpl.h"
10#include "TargetInfo.h"
11
12using namespace clang;
13using namespace clang::CodeGen;
14
15//===----------------------------------------------------------------------===//
16// VE ABI Implementation.
17//
18namespace {
19class VEABIInfo : public DefaultABIInfo {
20public:
21  VEABIInfo(CodeGenTypes &CGT) : DefaultABIInfo(CGT) {}
22
23private:
24  ABIArgInfo classifyReturnType(QualType RetTy) const;
25  ABIArgInfo classifyArgumentType(QualType RetTy) const;
26  void computeInfo(CGFunctionInfo &FI) const override;
27};
28} // end anonymous namespace
29
30ABIArgInfo VEABIInfo::classifyReturnType(QualType Ty) const {
31  if (Ty->isAnyComplexType())
32    return ABIArgInfo::getDirect();
33  uint64_t Size = getContext().getTypeSize(Ty);
34  if (Size < 64 && Ty->isIntegerType())
35    return ABIArgInfo::getExtend(Ty);
36  return DefaultABIInfo::classifyReturnType(Ty);
37}
38
39ABIArgInfo VEABIInfo::classifyArgumentType(QualType Ty) const {
40  if (Ty->isAnyComplexType())
41    return ABIArgInfo::getDirect();
42  uint64_t Size = getContext().getTypeSize(Ty);
43  if (Size < 64 && Ty->isIntegerType())
44    return ABIArgInfo::getExtend(Ty);
45  return DefaultABIInfo::classifyArgumentType(Ty);
46}
47
48void VEABIInfo::computeInfo(CGFunctionInfo &FI) const {
49  FI.getReturnInfo() = classifyReturnType(FI.getReturnType());
50  for (auto &Arg : FI.arguments())
51    Arg.info = classifyArgumentType(Arg.type);
52}
53
54namespace {
55class VETargetCodeGenInfo : public TargetCodeGenInfo {
56public:
57  VETargetCodeGenInfo(CodeGenTypes &CGT)
58      : TargetCodeGenInfo(std::make_unique<VEABIInfo>(CGT)) {}
59  // VE ABI requires the arguments of variadic and prototype-less functions
60  // are passed in both registers and memory.
61  bool isNoProtoCallVariadic(const CallArgList &args,
62                             const FunctionNoProtoType *fnType) const override {
63    return true;
64  }
65};
66} // end anonymous namespace
67
68std::unique_ptr<TargetCodeGenInfo>
69CodeGen::createVETargetCodeGenInfo(CodeGenModule &CGM) {
70  return std::make_unique<VETargetCodeGenInfo>(CGM.getTypes());
71}
72